Accession Number:

ADD018022

Title:

Modified Carbon Improved Corrosion Resistance.

Descriptive Note:

Patent, Filed 15 Jan 93, patented 27 Feb 96,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1996-02-27

Pagination or Media Count:

7.0

Abstract:

Graphite or carbon particles with a graphitic skin are intercalated with a compound including an oxidized form of a metal and then reduced in a hydrogen atmosphere. This process reduces the driving force for the galvanic reaction between the particles and active metals in aqueous environments. The particles may be present as a reinforcement for a metal matrix e.g.. graphitealuminum metal matrix composites or as a reinforcement for a non-metallic material e.g., graphitepolyimide, graphitepolyester or graphitecyanate composites. In the latter case, the composite is adjacent to a metal in a structure. By way of example, the graphite or carbon particle may he a fiber, the metal subject to attack may be aluminum or magnesium, and the intercalation compound may be NiCl2.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Polymer Chemistry
  • Laminates and Composite Materials
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE